Power transmission shock absorber



ay 1948. c. GULB RANDSEN' POWER TRANSMISSION SHOCK ABSORBER v I FiledMay 3, 1945 3 Sheets-Sheet 1' I N VEN TOR. 6 01 Gel/614m wayfmrATTORNEYS ay 11, 1948. Q GULBRANDSEN 2,441,267

POWER TRANSMISSION SHOCK ABSORBER Filed May 3, 1945 3 Sheets-Sheet 2 INVEN TOR.

ATTD RN EYS 3 1948. C. GULBRANDSEN POWER TRANSMISSION SHOCK ABSORBERFiled May 3, 1945 s Sheets-Sheet :5

W INVENTOR. 072M51 Patented May 1 1, 1948 UNITED STATES PATENT OFFICEPOWER TRANSMISSION SHOCK ABSORBER Carl Gulbrandsen, Miami, Fla.

Application May 3, 1945, Serial No. 591,821

2 Claims. (61. 84-27) I The invention relates to a shock absorber, andmore especially to a power transmission shock absorber assembly.

The primary object of the invention is the pmvision of an assembly ofthis character, wherein by the grouping into series of separated springleaves and the coupling thereof in a divided power shaft sudden'shocksand jars incident thereto in its travel will be absorbed to relieveundue strain thereon, and avoiding jerks in the motion transmittedthereby.

Another object of the invention is the provision of an assembly of thischaracter, wherein it is novel in the makeup and unique under theassembly of its parts, so as to afiord smooth motion to a power shaft,particularly when starting and stopping, thereby relieving shocks andJars resultant therefrom.

A further object of the invention is the provision of an assembly ofthis character, wherein the parts are susceptible of regulation to varythe resiliency and to assure absorption of shocks and jars incident toenergy imparted thereto, and to Figure 6 is a sectional view taken onthe line 6-4? of Figure 3 looking in the direction of the arrows.

Similar reference characters indicate corresponding parts throughout theseveral views in the drawings.

Referring to the drawings in detail A and B, respectively, designategenerally portions of separated sections of a power transmissions shaftfor driving purposes, while 0, denotes the assembly in its entirety, asconstructed in accordance with the invention and hereinafter set forth.

The assembly comprises a pair of companion hubs at, each being socketedcentrally thereof at H, which is outermost thereof, for theaccommodation of the section of the power shaft next thereto. A bindingscrew l2 is;threaded in each hub it for the firm and secure fastening ofthe section of the shaft in the socket I i although any other approvedtype of fastener may be installed reduce jerks and sudden strains in theoperation of a power shaft.

ina-fter pointed out in the claims appended.

In the accompanying drawings:

Figure 1 is a fragmentary perspective view of a power shaft showingtheassembly constructed in accordance with the invention applied.

Figure 2 is a cross sectional view thereof, taken approximately on theline 2-2 of Figure 3 looking in the direction of the arrows.

Figure 3 is an enlarged vertical longitudinal section view.

Figure 4 is a sectional view taken on the line 4-4 of Figure 3 lookingin the direction of the arrows.

Figure 5 is a sectional view taken on the line I 5-6 of Figured lookingin the direction of the arrows. P

for such purpose. The section A of the shaft is next to the power unit,not shown, while the section B of such shaft is remote to such unit,with the assembly C installed between these sections Tfi of said shaft.A still further object of the invention is the The hubs iii are alignedand centered with respect to each through the seating at l3 of a pilotprojection or lug M, the former being in the hub on the section A, whilethe latter is on the hub upon the section B of the power shaft.

Disposed crosswise in a suitable clearance centrally in each hub illwith respect to its length is a group of spring leaves, including anintermediate long leaf i5 and graduated shorter outer leaves l6,respectively, which are arranged sideby-side in contacting relation, toeach of the group and function as shock absorbing members thereof. Theleaves l5 and I8 of each group extend outwardly from opposite sides ofthe hub ill an equal distance, and the intermediate leaf i5 of one grouphas collar-like terminal heads ll thereon, in which are fixed couplingpins 118, fastened therein at their wedging ends ill by nuts 20 threadedthereon. The intermediate leaf l5 of the other group has elongatedslotted terminal heads 2!, its slots 22 loosely receiving the pins l8,which are held in this condition by enlargement 23, so that the groupsof leaves l5 and I6 will be coupled together and the sections A and B ofthe power shaft resiliently joined with one another, so that shockabsorbing activity will be had therebetween in the driving of such shaftfor transmitting power energy to machinery.

- The groups of spring leaves l5 and it, each is held fast in the hub l0companion thereto by a tiebolt 24 which penetrates the said leaves andhold the same fixed in the hub, the bolt 2 being tapped in such hub Ill.The loose connection of the intermediate leaves Iii of the groups ofleaves l5 and It by the pins l8 compensates for the flexing variation ofsuch leaves It under shock absorbing action of the assembly C during thestarting and stopping of the shaft.

It should be apparent that the longer the leaves I! and l9 0! theassembly are the more resiliency will be present therein, and in thismanner the resiliency of such assembly is regulated, it being understoodthat the number of leaves can be increased or decreased in the groups 1at the option of the user of the said assembly.

parting from the spirit of the invention or sacri- 26 flcing any of itsadvantages.

What is claimed is: g

1. An assembly of the kind described, comprising a pair of companionhubs, each being socketed centrally at the outermost end thereof, so2,227,333

4. a section of a sectional transmission shaft receivable in eachsocket, means in said hubs for retaining said sections in said sockets,means in said hubs for aligning and centering the hubs in relation toeach other, a group of spring leaves disposed crosswise and centrally ineach hub. said group including an elongated intermediate leaf andioreshortened outer leaves, terminal heads at the opposite ends of saidintermediate leaf, coupling pins securing said intermediate leaves inaligned relation to each other at the ends thereof, and means in saidhubs for holding said leaves fast therein.

2. The invention as in claim 1, wherein the terminal heads on one of theintermediate leaves have the pins taped therein, while the terminalheads on the other intermediate leaves are elongated to loosely receivethe pins.

CARL GULBRANDBEN.

REFERENCES CITED i The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number I ,ame Date 1,438,273 Spicer Dec, 12, 19221,887,011 Carr et al. Nov. 8, 1932 1,965,021 Allen July 3, 1934 CampbellDec. 31, 1940

